1 Why, a car accident on the London Underground! (7)
5 Support fund (7)
9 I challenge son to name vines (5)
10 Beer? Brilliant! But is it? (9)
11 Lands awkwardly by carrying measure to Florence and outskirts of Paris (5-5)
12 Miserable brothers - not married (4)
14 Pitch sailor - English - and retired copper into tossing sea to accompany fish (7,5)
18 Caught daredevil at the top of the stairs making disastrous descent! (5,7)
21 Press casually to the sound of music (4)
22 It flashes a warning to underweight Villa (10)
25 State of oarsman in trouble (3,6)
26 Picnic shade? (5)
27 The Boss is out of season; nine entered - and seven more (7)
28 Howl, duck and catch knife (7)

1 Kipling's boy is taken in by offensive native Australian with attitude (6)
2 Say, cold capsicum's fruit is hot! (6)
3 Spineless pantomime character (5-5)
4 Call, Hey, Derek! (5)
5 Led miss Panama till December 1st (9)
6 Classic trees (4)
7 Lesser member spoons grub soup (8)
8 Colder, damper but sounds more spacious (8)
13 A lack of correspondence in time confuses horsy Nancy (10)
15 Jazz article - one about convention (9)
16 Surpasses by putting twig on head and eating prunes! (8)
17 Don x-rays smashed quartz (8)
19 Lawn Tennis Association appears in tabloid leader (6)
20 Model girl retires to Royal retreat (6)
23 Nuclear device with hard shell (1-4)
24 Feeble material (4)